If you’re over the age of 28, my guess is you’re confused by this question. Of course you say “hello” when picking up the phone. But Gen Z — a generation raised in a post-landline universe — may disagree. They expect you — the person calling — to speak first. A recent viral tweet brought up this alarming etiquette divide. Someone who works in recruiting tweeted that she’s noticed that when she calls Gen Z people (at their scheduled call time), they often wait for her to speak first instead of saying “hello.”